Abstract: A cranial bone and bone flap fixation device, comprising first and second caps between which portions of the cranial bone and bone flap are to be gripped; a mounting post located to allow relative cap movement lengthwise of an axis defined by the post, at least the first cap, which is movable lengthwise of the post, forming peripheral petals that are spaced apart about an axis and radially outwardly of a central body portion of the cap, whereby the petals are individually and resiliently movable relative to the central body portion in directions generally parallel to the axis, and in response to gripping.

Abstract: A cranial bone and bone flap fixation device, comprising first and second caps between which portions of the cranial bone and bone flap are to be gripped; a longitudinally extending mounting post located to allow relative cap movement lengthwise of an axis defined by the post at least the first cap having protruding structure to extend into a gap formed between the cranial bone and the bone flap to laterally orient the first cap so that peripheral portions thereof will extend over both the cranial bone and the bone flap during fixation.

Abstract: A clip to interconnect primary and secondary bone zones having edges and surfaces, comprising in combination a first tab to extend proximate a surface of the secondary bone zone; a second tab associated with the first tab, and located to extend proximate a surface of the primary bone zone, the second tab having at least one barb oriented to engage the primary bone to resist displacement of the second tab in a longitudinal direction toward the secondary bone zone.

Abstract: A clip to interconnect primary and secondary bone zones having edges, comprising in a first tab to extend over a surface of the secondary bone zone, above a level defined by that surface, and an extension of the tab projecting below the level, and a first projection carried by the extension for penetrating the primary bone zone below the first level, and the extension having bowed configuration, to enable forcible driving of the projection, to effect penetrating.

Abstract: A clip to inter-connect primary and secondary bone zones having spaced apart edges, comprising in combination two clip sections, and a first tab to extend over a surface of the secondary bone zone at a first level, the first tab carried by one of the sections; a projection to anchor the other clip section to the primary bone zone, and a tab extension projecting below the first level, and having at least one through opening to receive a the projection for penetrating the primary bone zone below the first level.

Abstract: A clip to inter-connect primary and secondary bone zones having edges, comprising in combination a first tab to extend over a surface of the secondary bone zone, above a level defined by that surface; and an extension of the tab projecting below the first level, the extension having a through opening to receive a first projection for penetrating the primary bone zone below the first level.

Abstract: An attachment to connect two spaced apart zones having surface and edges, one zone comprising a cranium bone zone, a plate, fastener openings carried by the plate at peripherally spaced locations, to receive fasteners that penetrate the bone zone at their surfaces, and at least one prong to connect the plate to at least one bone zone edge.

Abstract: A clip to inter-connect primary and secondary bone zones having edges, comprising in combination a first tab to extend over a surface of the secondary bone zone, above a level defined by that surface; a first projection carried by the tab and configured to penetrate the primary bone zone at the edge thereof, and below the first level; and an auxiliary tab associated with the first tab positioned to extend over a top surface of the primary bone zone to guide movement of the clip as the first projection penetrates the primary bone zone.

Abstract: A clip to inter-connect primary and secondary bone zones having edges, comprising in combination a tab to extend over a surface or surfaces of at least one of the bone zones, above a level defined by the one surface; a first projection carried by the tab and having a hook to engage a bone zone at its edge, and below the level. The projection may be bowed, and may have S-configuration.

Abstract: The method of installing a cluster of batteries in a power supply receptacle, that includes providing a funnel having a guide opening to receive and guide angularly oriented displacement of the cluster of batteries relative to the funnel, placing the funnel guide opening into registration with the power supply receptacle, and installing the oriented cluster of batteries through the funnel guide opening and into the receptacle.

Abstract: This invention concerns a device, and instruments for its insertion, that aligns two sections of bone and fixates the two sections to one another. The alignment feature and the fixation feature are typically independent, but they are incorporated into one device. The device is particularly well adapted to the alignment and fixation of a fragment of cranial bone with the remainder of the cranium. The device can be applied to a cranial bone fragment, and it allows the bone fragment to be aligned with the outer cortex of the cranium; prevents the bone fragment from entering the cranial cavity; and if desired, fixates the bone fragment to the cranium. The device may take the form of a clip having a tab to surface engage one section of bone, two projections to respectively engage edge portions of two bone sections, and an S-shaped flange integral with the tab and at least one of the projections.

Abstract: This invention concerns a device, and instruments for its insertion, that aligns two sections of bone and fixates the two sections to one another. The alignment feature and the fixation feature are typically independent, but they are incorporated into one device. The device is particularly well adapted to the alignment and fixation of a fragment of cranial bone with the remainder of the cranium. The device can be applied to a cranial bone fragment, and it allows the bone fragment to be aligned with the outer cortex of the cranium; prevents the bone fragment from entering the cranial cavity; and if desired, fixates the bone fragment to the cranium.

Abstract: A clip to inter-connect primary and secondary bone zones having edges, comprising in combination a tab to extend over a surface or surfaces of at least one of the bone zones, above a level defined by the one surface; a first projection carried by the tab and having a hook to engage a bone zone at its edge, and below the level.